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BaseRepresentation
bin101001011010110101001
32112221202121
411023112221
5321412400
645031241
714351632
oct5132651
92487677
101357225
11847781
12555521
133869bc
14274889
151bc21a
hex14b5a9

1357225 has 9 divisors (see below), whose sum is σ = 1690213. Its totient is φ = 1081120.

The previous prime is 1357201. The next prime is 1357333. The reversal of 1357225 is 5227531.

Multipling 1357225 by its sum of digits (25), we get a square (33930625 = 58252).

1357225 divided by its sum of digits (25) gives a square (54289 = 2332).

The square root of 1357225 is 1165.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 267289 + 1089936 = 517^2 + 1044^2 .

It is not a de Polignac number, because 1357225 - 25 = 1357193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1357225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5709 + ... + 5941.

21357225 is an apocalyptic number.

1357225 is the 1165-th square number.

1357225 is the 583-rd centered octagonal number.

It is an amenable number.

1357225 is a deficient number, since it is larger than the sum of its proper divisors (332988).

1357225 is an frugal number, since it uses more digits than its factorization.

1357225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 238 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The cubic root of 1357225 is about 110.7177581786.

The spelling of 1357225 in words is "one million, three hundred fifty-seven thousand, two hundred twenty-five".

Divisors: 1 5 25 233 1165 5825 54289 271445 1357225